Managers / Q2 2023 · view latest →
Mass General Brigham, Inc
CIK 0001678378 · 399 REVOLUTION DRIVE, SUITE 612, SOMERVILLE, MA, 02145 · 8572777268
Reported Value
Under review
reported total failed a data-quality check
Positions
7
Filings on Record
24
2019–present window
Filed
Jul 21, 2023
original filing
Summary
Compared with Q1 2023, the fund opened 3 new positions and exited 2.
Reported Value by Quarter
13F Reported Value
Portfolio Composition
By security type
- ETP · 78.2% · $86M
- Common Stock · 21.8% · $24M
Quarter-over-Quarter Changes full breakdown →
vs Q1 2023 (amended baseline)
| Issuer | Move | Share Δ | Shares now | Value Δ | Value now |
|---|---|---|---|---|---|
| IOTSAMSARA INC | NEW | +378.0K | 378.0K | +$10M | $10M |
| FLYWFLYWIRE CORPORATION | NEW | +58.5K | 58.5K | +$2M | $2M |
| GTMZOOMINFO TECHNOLOGIES INC | NEW | +66.4K | 66.4K | +$2M | $2M |
| RVMDREVOLUTION MEDICINES INC | SOLD OUT | −338.2K | 0 | −$7,325 | $0 |
| PATHUIPATH INC | SOLD OUT | −52.1K | 0 | −$915 | $0 |
| ISHARES CORE SP 500 ETF | TRIMMED | −44.2K | 120.6K | +$54M | $54M |
| ISHARES CORE U.S. AGGREGATE ETF | TRIMMED | −101.8K | 328.9K | +$32M | $32M |
| COINCOINBASE GLOBAL INC CLASS A | HELD | +0 | 128.9K | +$9M | $9M |
Value changes conflate price moves with buying and selling — share changes are the real signal. Share counts are not split-adjusted.
Holdings — Q2 2023
7 positions
| # | Issuer | Class | % Portfolio | Value ↓ | Shares |
|---|---|---|---|---|---|
| 1 | ISHARES CORE SP 500 ETF | ETF | 48.90% | $54M | 120.6K |
| 2 | ISHARES CORE U.S. AGGREGATE ETF | ETF | 29.31% | $32M | 328.9K |
| 3 | IOTSAMSARA INChistory → | CL A | 9.53% | $10M | 378.0K |
| 4 | COINCOINBASE GLOBAL INC CLASS Ahistory → | CL A | 8.39% | $9M | 128.9K |
| 5 | FLYWFLYWIRE CORPORATIONhistory → | COM | 1.65% | $2M | 58.5K |
| 6 | GTMZOOMINFO TECHNOLOGIES INChistory → | COM | 1.53% | $2M | 66.4K |
| 7 | RIVNRIVIAN AUTOMOTIVE INC | CL A | 0.68% | $750,933 | 45.1K |
Filing History
| Quarter | Reported Value | Positions | Filed | Type | Links |
|---|---|---|---|---|---|
| Q1 2026 | $469M | 6 | May 5, 2026 | 13F-HR | changes · EDGAR ↗ |
| Q4 2025 | $810M | 7 | Jan 27, 2026 | 13F-HR | changes · EDGAR ↗ |
| Q3 2024 | $44M | 5 | Oct 16, 2024 | 13F-HR | changes · EDGAR ↗ |
| Q2 2024 | $21M | 4 | Jul 31, 2024 | 13F-HR | changes · EDGAR ↗ |
| Q1 2024 | $57M | 5 | Apr 4, 2024 | 13F-HR | changes · EDGAR ↗ |
| Q4 2023 | $28M | 2 | Jan 24, 2024 | 13F-HR | changes · EDGAR ↗ |
| Q3 2023 | $11M | 2 | Oct 23, 2023 | 13F-HR | changes · EDGAR ↗ |
| Q2 2023 | Under review | 7 | Jul 21, 2023 | 13F-HR | changes · EDGAR ↗ |
| Q1 2023 | $128,310 | 6 | Apr 5, 2023 | 13F-HR | changes · EDGAR ↗ |
| Q4 2022 | Under review | 5 | Jan 19, 2023 | 13F-HR | changes · EDGAR ↗ |
| Q3 2022 | $192M | 3 | Oct 19, 2022 | 13F-HR | changes · EDGAR ↗ |
| Q2 2022 | $214M | 3 | Jul 27, 2022 | 13F-HR | changes · EDGAR ↗ |
| Q1 2022 | $235M | 5 | Apr 15, 2022 | 13F-HR | changes · EDGAR ↗ |
| Q4 2021 | $282M | 7 | Jan 19, 2022 | 13F-HR | changes · EDGAR ↗ |
| Q3 2021 | $371M | 7 | Oct 8, 2021 | 13F-HR | changes · EDGAR ↗ |
| Q2 2021 | $410M | 9 | Jul 19, 2021 | 13F-HR | changes · EDGAR ↗ |
| Q1 2021 | $639M | 3 | Apr 12, 2021 | 13F-HR | changes · EDGAR ↗ |
| Q4 2020 | $473M | 3 | Feb 8, 2021 | 13F-HR | changes · EDGAR ↗ |
| Q3 2020 | $126M | 2 | Oct 23, 2020 | 13F-HR | changes · EDGAR ↗ |
| Q4 2019 | $290M | 3 | Jan 15, 2020 | 13F-HR | changes · EDGAR ↗ |
| Q3 2019 | $436M | 3 | Oct 30, 2019 | 13F-HR | changes · EDGAR ↗ |
| Q2 2019 | $153M | 1 | Jul 29, 2019 | 13F-HR | changes · EDGAR ↗ |
| Q1 2019 | $162M | 1 | Apr 18, 2019 | 13F-HR | changes · EDGAR ↗ |
| Q4 2018 | $144M | 1 | Jan 30, 2019 | 13F-HR | changes · EDGAR ↗ |
13F filings are due up to 45 days after quarter end, so holdings shown here lag the fund’s current book. Source: original SEC filing on EDGAR ↗.